2391559 has 2 divisors, whose sum is σ = 2391560. Its totient is φ = 2391558.

The previous prime is 2391547. The next prime is 2391583. The reversal of 2391559 is 9551932.

It is a happy number.

2391559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2391559 - 2⁵ = 2391527 is a prime.

2391559 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2391539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195779 + 1195780.

It is an arithmetic number, because the mean of its divisors is an integer number (1195780).

2^2391559 is an apocalyptic number.

2391559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391559 is an equidigital number, since it uses as much as digits as its factorization.

2391559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12150, while the sum is 34.

The square root of 2391559 is about 1546.4666178098. The cubic root of 2391559 is about 133.7294422068.

The spelling of 2391559 in words is "two million, three hundred ninety-one thousand, five hundred fifty-nine".